726 results on '"Lau, Michael"'
Search Results
152. Continuous Electrocardiogram Monitoring in Zebrafish with Prolonged Mild Anesthesia
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Le, Tai, primary, Zhang, Jimmy, additional, Xia, Xing, additional, Xu, Xiaolei, additional, Clark, Isaac, additional, Schmiess-Heine, Lauren, additional, Nguyen, Anh H., additional, Lau, Michael P. H, additional, and Cao, Hung, additional
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- 2020
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153. Race‐Related Trauma
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Lau, Michael Y., primary and Jenkins, Kalesha, additional
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- 2020
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154. Biomimetic surgical mesh to replace fascia with tunable force-displacement
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Li, Yuan, primary, McPhee, Ian C., additional, Lau, Michael P.H., additional, and Pease, Leonard F., additional
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- 2020
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155. Effect of a protein corona on the fibrinogen induced cellular oxidative stress of gold nanoparticles
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Kuschnerus, Inga, primary, Lau, Michael, additional, Giri, Kalpeshkumar, additional, Bedford, Nicholas, additional, Biazik, Joanna, additional, Ruan, Juanfang, additional, and Garcia-Bennett, Alfonso, additional
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- 2020
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156. A lysozyme corona complex for the controlled pharmacokinetic release of probucol from mesoporous silica particles
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Giri, Kalpeshkumar, primary, Lau, Michael, additional, Kuschnerus, Inga, additional, Moroni, Irene, additional, and Garcia-Bennett, Alfonso E., additional
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- 2020
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157. Integrating Trauma Psychology and Cultural Psychology: Indigenous Perspectives on Theory, Research, and Practice
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Hill, Jill S., Lau, Michael Y., and Sue, Derald Wing
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- 2010
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158. A Theoretical and Experimental Analysis of Radiofrequency Ablation with a Multielectrode, Phased, Duty-Cycled System
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LAU, MICHAEL, HU, BETTY, WERNETH, RANDY, SHERMAN, MARSHALL, ORAL, HAKAN, MORADY, FRED, and KRYSL, PETR
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- 2010
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159. Reliability and Validity of the Euthanasia Attitude Scale (EAS) for Hong Kong Medical Doctors
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Tang, Wai-Kiu, Mak, Kwok-Kei, Kam, Philip Ming-Ho, Ho, Joanna Wing-Kiu, Chan, Denise Che-Ying, Suen, To-Lam, Lau, Michael Chak-Kwan, Cheng, Adrian Ka-Chun, Wan, Yuen-Ting, Wan, Ho-Yan, and Hussain, Assad
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- 2010
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160. Do Research Literatures Give Correct Answers?
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Howard, George S., Lau, Michael Y., Maxwell, Scott E., Venter, André, Lundy, Rae, and Sweeny, Ryan M.
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- 2009
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161. Recent Records of Freshwater Turtles from Guangdong, China
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Shiping, Gong, Haitao, Shi, Fong, Jonathan J., and Lau, Michael
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- 2009
162. Measurement and Methodological Issues in Social Class Research: A Call for Theorization and Study
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Lau, Michael Y., Cho, Rosa J., Chang, Jennifer, Huang, Jill, and Liu, William M., book editor
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- 2013
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163. Species list and distribution of non-native freshwater turtles in Hong Kong.
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Yik-Hei Sung, Wing-Ho Lee, Wai-neng Lau, Michael, Lau, Anthony, Wong, Paulina P. Y., Dingle, Caroline, Ho Yee Yeung, and Fong, Jonathan J.
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TURTLES ,SPECIES distribution ,INTRODUCED species - Abstract
Freshwater turtles have been introduced to a diversity of environments worldwide, sometimes leading to devastating impacts on native biodiversity and ecosystems. Documentation of species and distribution of non-native turtles is needed to effectively manage potentially invasive turtles. Here, we compiled a species list and distribution map of non-native turtles found in Hong Kong by combining field survey data, anecdotal records made by naturalists, and citizen science data. We collected 96 records, involving 25 pure species and three putative hybrids distributed widely throughout Hong Kong. The red-eared slider (Trachemys scripta elegans), listed as one of the world’s 100 worst invasive alien species, was the most frequently recorded species. Most, if not all, non-native turtles were probably released intentionally, as abandoned pets or in religious release. We urge for strengthening legal regulation and developing measures to stop intentional release, particularly religious release. [ABSTRACT FROM AUTHOR]
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- 2021
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164. Ketogenic Weight Loss Diet Rapidly Unmasks an Insulinoma
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Meier, Erin, Winnicka, Lydia, Lau, Michael, Vo, Duc, Joutovsky, Alla, and Shenoy, Mangalore Amith
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Article Subject - Abstract
The ketogenic diet, a diet high in fat and extremely low in carbohydrates, has recently gained momentum and is increasingly employed by patients in order to lose weight. We report a case of an otherwise healthy 47-year-old male who developed seizures and hypoglycemia shortly after initiating this diet. Biochemical testing confirmed hyperinsulinemic hypoglycemia and a subsequent abdomen MRI showed a pancreatic mass. The tumor was ultimately excised with pathology confirming an insulinoma. It was felt that his abrupt decrease in carbohydrate consumption led to the rapid unmasking of this tumor.
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- 2019
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165. Twenty-Four–Hour Ambulatory BP in Snoring Children With Obstructive Sleep Apnea Syndrome
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Leung, Lettie C.K., Ng, Daniel K., Lau, Michael W., Chan, Chung-hong, Kwok, Ka-li, Chow, Pok-yu, and Cheung, Josephine M.Y.
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- 2006
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166. Confronting Amphibian Declines and Extinctions
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Mendelson, Joseph R., III, Lips, Karen R., Gagliardo, Ronald W., Rabb, George B., Collins, James P., Diffendorfer, James E., Daszak, Peter, Roberto, Ibáñez D., Zippel, Kevin C., Lawson, Dwight P., Wright, Kevin M., Stuart, Simon N., Gascon, Claude, da Silva, Hélio R., Burrowes, Patricia A., Joglar, Rafael L., La Marca, Enrique, Lötters, Stefan, du Preez, Louis H., Weldon, Ché, Hyatt, Alex, Rodriguez-Mahecha, José Vicente, Hunt, Susan, Robertson, Helen, Lock, Brad, Raxworthy, Christopher J., Frost, Darrel R., Lacy, Robert C., Alford, Ross A., Campbell, Jonathan A., Parra-Olea, Gabriela, Bolaños, Federico, Calvo Domingo, José Joaquin, Halliday, Tim, Murphy, James B., Wake, Marvalee H., Coloma, Luis A., Kuzmin, Sergius L., Price, Mark Stanley, Howell, Kim M., Lau, Michael, Pethiyagoda, Rohan, Boone, Michelle, Lannoo, Michael J., Blaustein, Andrew R., Dobson, Andy, Griffiths, Richard A., Crump, Martha L., Wake, David B., and Brodie, Edmund D., Jr.
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- 2006
167. Ontological and Epistemic Claims of Realism and Instrumentalism
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Lau, Michael Y.
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- 2005
168. Postmodernism and the Values of Science
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Lau, Michael Y.
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- 2002
169. A semi-empirical pod model for USCG icebreaker mackinaw. Part I. The empirical data
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Lau, Michael
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A semi-empirical pod model is developed based on experimental data for the USCGC Mackinaw to predict propulsion forces for the icebreaker driven by twin podded propulsors. The experiments are conducted in straight-ahead motion with the azimuth angle of one of the twin pods steered in a range from 0 to 180o. In this pod model, assumption was made to extend the test data to the full range of 360o azimuth angles and advance coefficients. Analysis was then performed to allow these test data for application of any planar motion including turning by considering hull-pod interaction. This is Part I of a two-part paper. In this paper, the results from ice tank tests are presented. These include steering moment generated by the propulsors, thrust and torque of the propellers and the forces exerted on the hull at the location of the connection of the propulsors. The procedure to extend the empirical data to the full range is then presented. The agreement between static and dynamic data and the symmetry of the data is considered., The 24th IAHR International Symposium on Ice, June 4-9, 2018, Vladivostok, Russia
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- 2018
170. A semi-empirical pod model for USCG icebreaker mackinaw. Part II. The model
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Lau, Michael
- Abstract
A semi-empirical pod model is developed based on experimental data for the USCGC Mackinaw to predict propulsion forces for the icebreaker driven by twin podded propulsors. The experiments are conducted in straight-ahead motion with the azimuth angle of one of the twin pods steered in a range from 0 to 180o. In this pod model, assumption was made to extend the test data to the full range of 360o azimuth angles and advance coefficients. Since all the tests are carried out in straight ahead motion only with a constant heading, analysis was performed to extend these functions to general cases of arbitrary planar motions. Three pod models were presented with varying degrees of complexity. Model I is the simplest model, applying the nondimensional longitudinal and transverse force coefficients obtained from the straight-ahead motion at known advance coefficient and azimuth angle directly to any motion. In Model II, the influence of geometrical drift angle local to the pods is added to Model I. In Model III, the influence of hull-pod interaction on the geometrical drift angle is added to further refine the model treatment. These models are implemented in the NRC/OCRE-RC’s in-house maneuvering simulation software OSIS-IHI and their validity assessed. The comparison of Model III with comprehensive model test and limited sea trial data shows good agreement. Based on the validation results, it is concluded that the final model (Model III) can be used successfully for motion simulation of pod-driven ships., The 24th IAHR International Symposium on Ice, June 4-9, 2018, Vladivostok, Russia
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- 2018
171. The Impact of a Training Device on Perception and Performance by Novice Users of an Autoinjector
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Garafalo, Jenna, primary, Li, Huiyang, additional, and Lau, Michael, additional
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- 2019
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172. Are “Human Factors Engineers” Prepared for the Medical Device Industry? – Preliminary Findings from an Interactive Poster Survey
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Li, Huiyang, primary and Lau, Michael, additional
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- 2019
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173. Su2061 – A Multi-Spectroscopic Approach to Disease Diagnosis: A Proof-Of-Principle Study on Ex Vivo Detection of Coeliac Disease
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Miller, Sara, primary, Rooney, Jeremy J., additional, Lau, Michael, additional, Aluzaite, Kristina, additional, Williams, Merrilee, additional, Bolton, Aroha, additional, Gordon, Keith C., additional, and Schultz, Michael, additional
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- 2019
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174. Home-based mobile fetal/maternal electrocardiogram acquisition and extraction with cloud assistance
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Le, Tai, primary, Fortunato, Joseph, additional, Maritato, Nicholas, additional, Cho, Yeeun, additional, Nguyen, Quoc-Dinh, additional, Ghirmai, Tadesse, additional, Lau, Michael P.H., additional, Han, Huy-Dung, additional, Nguyen, Cuong Kieu, additional, Nguyen, Vu Cong, additional, and Cao, Hung, additional
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- 2019
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175. Mobile EEG in research on neurodevelopmental disorders: Opportunities and challenges
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Lau-Zhu, Alex, primary, Lau, Michael P.H., additional, and McLoughlin, Gráinne, additional
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- 2019
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176. Global Conservation Status of Turtles and Tortoises (Order Testudines)
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Rhodin, Anders G.J., primary, Stanford, Craig B., additional, Dijk, Peter Paul Van, additional, Eisemberg, Carla, additional, Luiselli, Luca, additional, Mittermeier, Russell A., additional, Hudson, Rick, additional, Horne, Brian D., additional, Goode, Eric V., additional, Kuchling, Gerald, additional, Walde, Andrew, additional, Baard, Ernst H.W., additional, Berry, Kristin H., additional, Bertolero, Albert, additional, Blanck, Torsten E.G., additional, Bour, Roger, additional, Buhlmann, Kurt A., additional, Cayot, Linda J., additional, Collett, Sydney, additional, Currylow, Andrea, additional, Das, Indraneil, additional, Diagne, Tomas, additional, Ennen, Joshua R., additional, Forero-Medina, Germán, additional, Frankel, Matthew G., additional, Fritz, Uwe, additional, García, Gerardo, additional, Gibbons, J. Whitfield, additional, Gibbons, Paul M., additional, Shiping, Gong, additional, Guntoro, Joko, additional, Hofmeyr, Margaretha D., additional, Iverson, John B., additional, Kiester, A. Ross, additional, Lau, Michael, additional, Lawson, Dwight P., additional, Lovich, Jeffrey E., additional, Moll, Edward O., additional, Páez, Vivian P., additional, Palomo-Ramos, Rosalinda, additional, Platt, Kalyar, additional, Platt, Steven G., additional, Pritchard, Peter C.H., additional, Quinn, Hugh R., additional, Rahman, Shahriar Caesar, additional, Randrianjafizanaka, Soary Tahafe, additional, Schaffer, Jason, additional, Selman, Will, additional, Shaffer, H. Bradley, additional, Sharma, Dionysius S.K., additional, Haitao, Shi, additional, Singh, Shailendra, additional, Spencer, Ricky, additional, Stannard, Kahleana, additional, Sutcliffe, Sarah, additional, Thomson, Scott, additional, and Vogt, Richard C., additional
- Published
- 2018
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177. A device for measuring the variable lateral bow angle and its impact on score loss
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Lau, Michael, primary, Chung, Hoam, additional, Park, James L, additional, and Chauhan, Sunita, additional
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- 2018
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178. Physical Model Testing for Supporting Ice Force Model Development of DP Vessels in Managed Ice
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Islam, Shameem, additional, Wang, Jungyong, additional, Brown, Jeffrey, additional, Lau, Michael, additional, Gash, Robert, additional, Millan, David, additional, and Ocean, James Millan, additional
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- 2018
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179. Unexpected Phylogenetic Position of Parapelophryne among Southeast Asian Bufonids as Revealed by Mitochondrial DNA Sequence (Amphibia, Anura, Bufonidae)
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Matsui, Masafumi, Eto, Koshiro, Lau, Michael W. N., Liu, Wanzhao, and Nishikawa, Kanto
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China ,Bufo ,Pelophryne ,Parapelophryne ,Phylogeny - Abstract
We estimated the phylogenetic relationships of an enigmatic small toad Parapelophryne scalpta from Hainan Island, China to nine other bufonid genera from Southeast and East Asia using ca. 2000 bp sequences of the mitochondrial DNA genes 12S rRNA, tRNAval, and 16S rRNA using maximum likelihood and Bayesian inference methods. The East and Southeast Asian bufonid genera formed a clade in which seven lineages with unresolved relationships to each other were recognized. Monophyly was supported only for (A) Parapelophryne and Bufo, (B) Phrynoidis and Pedostibes, and (C) Leptophryne and Ansonia. All genera were genetically divergent from each other and Parapelophryne, erected purely based on morphology, could be recognized as a distinct genus. On the other hand, it was found to be the sister genus of East Asian Bufo, an unexpected result given their great morphological difference and discontinuous distribution.
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- 2015
180. The patent law of Hong Kong post-1997, after Hong Kong is reverted back to the People's Republic of China.
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Lau, Michael N.
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China-Hong Kong reunification, 1997 -- Analysis ,Patent law -- Comparative analysis - Abstract
Agreements made between Hong Kong, China and the UK are intended to define how the patent laws of Hong Kong will evolve beginning in 1997 when Hong Kong reverts to China. Patent law will transition away from UK influence and a new registration system will be developed. China's influence is uncertain, particularly in light of criticisms of intellectual property protections in China. The smoothness of the transition with be positively affected by the fact that Hong Kong can act as a gateway to China's involvement in the international economic community.
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- 1997
181. Friction correction for model ship resistance and propulsion tests in ice
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Lau, Michael
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power ,friction correction ,correlation friction coefficient ,model test ,ice resistance - Abstract
This paper documents the result of a preliminary analysis on the influence of hull-ice friction coefficient on model resistance and power predictions and their correlation to full-scale measurements. The study is based on previous model-scale/full-scale correlations performed on the National Research Council - Ocean, Coastal, and River Engineering’s (NRC-OCRE) model test data. There are two objectives for the current study: (1) to validate NRC-OCRE’s modeling standards in regarding to its practice of specifying a CFC (Correlation Friction Coefficient) of 0.05 for all its ship models; and (2) to develop a correction methodology for its resistance and propulsion predictions when the model is prepared with an ice friction coefficient slightly deviated from the CFC of 0.05. The mean CFC of 0.057 and 0.050 for perfect correlation as computed from the resistance and power analysis, respectively, have justified NRC-OCRE’s selection of 0.05 for the CFC of all its models. Furthermore, a procedure for minor friction corrections is developed., The 24th International Conference on Port and Ocean Engineering under Arctic Conditions, June 11-16, 2017, Busan, Korea
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- 2017
182. Pedal to the metal: the guide to selecting high performance hardware for your database application
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Colvin, Paul D. and Lau, Michael
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10GB - 14.99GB hard disk drive ,Microprocessor ,Hard disk drive ,Processor speed ,Under 5GB hard disk drive ,15GB - 19.99GB hard disk drive ,Over 25GB hard disk drive ,Microprocessor upgrade ,5GB - 9.99GB hard disk drive ,20GB - 25GB hard disk drive ,Central processing units ,Hard disks ,Microprocessors ,Processor speed ,Memory ,Directories - Abstract
Pedal to the Metal Consider the following: 1) You just found that dream application you've been looking for all these years and have no equipment; 2) You just got promoted […]
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- 1990
183. Unobtrusive Continuous Monitoring of Fetal Cardiac Electrophysiology in the Home Setting
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Le, Tai, primary, Moravec, Alexandre, additional, Huerta, Miguel, additional, Lau, Michael P.H., additional, and Cao, Hung, additional
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- 2018
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184. Cross-training in Design and Human Factors
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Rantanen, Esa, primary, Rickel, Stan, additional, Rantanen, Alisa, additional, and Lau, Michael, additional
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- 2018
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185. Can Coupling Multiple Complementary Methods Improve the Spectroscopic Based Diagnosis of Gastrointestinal Illnesses? A Proof of Principle Ex VivoStudy Using Celiac Disease as the Model Illness
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Fraser-Miller, Sara J., Rooney, Jeremy S., Lau, Michael, Gordon, Keith C., and Schultz, Michael
- Abstract
Spectroscopic methods are a promising approach for providing a point-of-care diagnostic method for gastrointestinal mucosa associated illnesses. Such a tool is desired to aid immediate decision making and to provide a faster pathway to appropriate treatment. In this pilot study, Raman, near-infrared, low frequency Raman, and autofluoresence spectroscopic methods were explored alone and in combination for the diagnosis of celiac disease. Duodenal biopsies (n= 72) from 24 participants were measured ex vivousing the full suite of studied spectroscopic methods. Exploratory principal component analysis (PCA) highlighted the origin of spectral differences between celiac and normal tissue with celiac biopsies tending to have higher protein relative to lipid signals and lower carotenoid spectral signals than the samples with normal histology. Classification of the samples based on the histology and overall diagnosis was carried out for all combinations of spectroscopic methods. Diagnosis based classification (majority rule of class per participant) yielded sensitivities of 0.31 to 0.77 for individual techniques, which was increased up to 0.85 when coupling multiple techniques together. Likewise, specificities of 0.50 to 0.67 were obtained for individual techniques, which was increased up to 0.78 when coupling multiple techniques together. It was noted that the use of antidepressants contributed to false positives, which is believed to be associated with increased serotonin levels observed in the gut mucosa in both celiac disease and the use of selective serotonin reuptake inhibitors (SSRIs); however, future work with greater numbers is required to confirm this observation. Inclusion of two additional spectroscopic methods could improve the accuracy of diagnosis (0.78) by 7% over Raman alone (0.73). This demonstrates the potential for further exploration and development of a multispectroscopic system for disease diagnosis.
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- 2021
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186. Odorrana fengkaiensis Wang, Lau, Yang, Chen, Liu, Pang & Liu, 2015, sp. nov
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Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong, and Liu, Yang
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Amphibia ,Odorrana ,Odorrana fengkaiensis ,Ranidae ,Animalia ,Biodiversity ,Anura ,Chordata ,Taxonomy - Abstract
Odorrana fengkaiensis sp. nov. Figs. 3, 4 Holotype. SYS a002265 (Fig. 3), adult male, from Heishiding Nature Reserve (23 �� 27 ' 40.16 " N, 111 �� 54 ' 32.80 " E; 253 m a.s.l.), Fengkai County, Guangdong Province, China, collected by Ying-Yong Wang (YYW hereafter). Paratypes. A total of 41 specimens (10 adult males, 31 adult females): 32 specimens from the same locality as the holotype at elevations between 190���510 m a.s.l. by YYW, Jian-Huan Yang (JHY hereafter), Yu-Long Li (YLL hereafter), Jian Zhao (JZ hereafter) and Run-Lin Li (RLL hereafter): 10 adult males, SYS a000174, SYS a000175 and SYS a000176 (Fig. 4: B) collected on 2 nd May 2008, SYS a000179 and SYS a000181 on 30 th May 2008, SYS a000185 on 31 st May 2008, SYS a000413 on 15 th July 2008, SYS a000792 on 13 th May 2010; SYS a001880 on 28 th June 2012, SYS a002263 on 12 th August 2013; 22 adult females, SYS a000105, 0 106 (Fig. 4: Fe), 0 108, 0 110, 0 111, 0 112, 0 127 and 0 128, collected on 10 th��� 20 th July 2007, SYS a000182, 0 183 (Fig. 4: B) on 2 nd May 2008, SYS a000184 on 29 th May 2008, SYS a000143 on 23 rd March 2008, SYS a000790 and 0 791 on 13 th May 2010, SYS a000793 on 26 th May 2010, SYS a001879 and 1881 on 28 th June 2012, SYS a002160 and 2161 on 2 nd June 2013, SYS a002262 (Fig. 4: D) on 13 th August 2013; SYS a002273 on 19 th August 2013, SYS a003345 on 3 rd October 2014. Two adult females from Shiwandashan Forest Park (21 �� 54 ' 16.36 '' N, 107 �� 54 ' 11.15 '' E; at elevations between 292���310 m a.s.l.), Shangsi County, Guangxi, SYS a001025 (Fig. 4: F) on 3 rd August 2010, SYS a001352 on 16 th August 2011. Seven adult females from Tongling Canyon (23 ��0' 11.07 "N, 106 �� 40 ' 2.22 "E; 450���550 m a.s.l.), Jingxi County, Guangxi Zhuang Autonomous Region, China by JHY, YLL, JZ and RLL: SYS a001043, 1044 and 1045 on 4���6 th August 2010, SYS a001366, 1367, 1368 on 20 th��� 21 st August 2011, SYS a002253 on 22 nd July 2013. Diagnosis. Odorrana fengkaiensis sp. nov. can be distinguished from other congeners by the following characters: (1) the body length of adult females approximately twice as long as males (SVL 77.8���111.9 mm in females, 37.4���51.8 mm in males); (2) eye large in males, longer than snout length, ED:SNT ratio 1.01���1.16; (3) tympanum of males large and distinct, extremely close to the eye, 0.7���1.4 mm in tympanum���eye distance (TED); (4) supratympanic fold slightly distinct; (5) dorsolateral folds absent; (6) dorsal skin shagreened with dense granules, only males with several large tubercles on dorsum; (7) flanks with tubercles and scattered larger pustules, 8���10 of which usually arranged in a dorsolateral row; (8) venter smooth; ventral spines present in adult males during the breeding season; (9) the heels significant overlapping, tibio-tarsal articulation stretched forward beyond the tip of snout; (10) disks on digits cordiform, pointed and moderately enlarged, FPW:DPW ratio 1.16���1.52 in males, 1.14���1.57 in females; (11) disks of all digits with circum-marginal grooves; (12) relative finger lengths: II Description of holotype. Size moderate (SVL 51.2 mm); head longer than wide (HDL:HDW = 1.16); snout slightly long (SNT:HDL = 0.41), obtusely rounded in dorsal view, rounded in profile, projecting beyond lower jaw; eye large and convex, eye diameter (ED) 1.03 times of snout length (SNT), upper eyelid wider than interorbital distance; top of head flat; canthus rostralis rounded; lip flared; loreal region concave; internasal distance (IND 5.2 mm) larger than interorbital distance (IOD 4.0 mm); tympanum circular, large, distinctly visible, 0.54 times of eye diameter; tympanum���eye distance small (TED 1.1 mm, TED: TYD = 0.25); tympanic rim elevated relative to skin of temporal region; choanae large, semicircular or inverted triangular, partly concealed by the maxillary shelves; two vomerine ridges markedly elevated, oblique, posteromedial to choanae, separated by a distance barely equal to length of one, bearing prominent teeth; tongue deeply notched posteriorly; paired gular pouches at corners of throat. Forelimbs moderately robust, hand moderately long, hand length (HDL) 0.3 times of SVL; fingers slender, relative finger lengths II Measurements of holotype (in mm). SVL 51.2, HDL 19.5, HDW 16.8, SNT 7.9, IND 5.2, IOD 4.0, ED 8.1, TYD 4.4, TED 1.1, HND 15.5, FTL 40.1, TIB 28.0, FPW 1.00, DPW 0.85. Coloration in life. Dorsum of head and body brown with large dark-brown spots, and reticulated green markings anterior to sacral vertebra; upper part of flank brown, lower part of flank light yellow with several large black spots; upper and lower lips brownish yellow with vertical black bars, the one under the eye largest and distinct; rictal glands brownish yellow; dorsal surface of limbs brown with black transverse bands; posterior surface of thigh brown with black and yellowish irregular markings; webbing on feet dark brown with yellowish marking; ventral surface white to yellowish, chest and chin mottled with light-brown blotches; pupil black edged with a striking bright yellow border; iris brown-yellow with black blotches and dense tiny freckles. Coloration in preservative. Dorsum, flanks and limbs dark-brown, dorsum with large blackish spots; ventral surface of body and limbs creamy white with faint brown spots on chest and chin. Variation. Measurements and body proportions of type series of Odorrana fengkaiensis sp. nov. are given in Table 3. The new species shows obvious differences among females and males. SVL of adult females approximately twice as long as of males, the body size of female individuals from Shiwandashan Nature Reserve and Tongling Canyon, Guangxi, significantly greater than from Heishiding Nature Reserve, Fengkai County, Guangdong (SVL of adult females 89.0��� 111.9 (103.1 �� 7.8) mm from Shangsi and Jingxi, Guangxi; 77.3���109.9 (93.2 �� 8.9) mm from Heishiding Nature Reserve, Guangdong). Dorsum of young adult females garnished with reticulated green to lightgreen markings (Fig. 4: B and D), but in some old adult female individuals (Fig. 4: E and F), the dorsum uniform brown without green pattern. In froglet (Fig. 4: C), the whole body olive, dorsum with brown irregular spots. Disks of digits of female individuals from Guangxi are larger than from Heishiding Nature Reserve (FPW/DPW ratio 1.79���1.94 vs. 1.35���1.80). Moreover, males with velvety nuptial pad on finger I, paired gular pouches; mature oocytes in life almost purely black (SYS a000111, SYS a00184, SYS a002161, SYS a002262), in preservative showed dark grey animal pole and olive vegetative pole. Comparisons. Comparative data of O. fengkaiensis sp. nov. with 56 recognized species of the genus Odorrana were obtained from the literature (Ao et al. 2003; Bain et al. 2003, 2009; Bain and Stuart 2006; Fei et al. 2001, 2009, 2012; Li et al. 2008; Matsui 1994; Matsui & Jaafar 2006; Mo et al. 2015; Orlov et al. 2003, 2006; Stuart et al. 2005, 2006, Stuart & Bain 2005; Tung et al. 2008; Yang & Li 1990). Examined specimens of O. versabilis, O. nasuta, O. exiliversabilis, O. graminea, O. tormota, O. zhaoi, O. hainanensis, O. margaretae, O. jingdongensis, O. huangshanensis, O. schmackeri, O. tianmuii, O. lungshengensis, O. wuchuanensis and O. yizhangensis are listed in the Appendix 1. Odorrana fengkaiensis sp. nov. is most similar to O. bacboensis, O. hainanensis and O. tiannanensis. It differs from O. hainanensis by having relatively large eye in males, ED longer than SNT (ED: SNT ratio 1.01���1.16, median 1.09) vs. usually ED smaller than SNT, (ED:SNT 0.90���1.03, median 0.97) in O. hainanensis; disks on fingers of males moderately enlarged, FPW:DPW ratio 1.16���1.52 (median 1.34) vs. disks on fingers significantly enlarged, FPW:DPW ratio 1.79���1.94 (median 1.87) in O. hainanensis (see Fig. 7); relative finger lengths II O. hainanensis; tibio-tarsal articulation forward beyond the tip of snout vs. reaches between anterior corner of the eye and tip of snout in O. hainanensis; mature oocytes purely black in life vs. yellowish white with blackish brown animal pole in O. hainanensis. It differs from O. bacboensis by its eye relatively large in males, ED longer than SNT vs. ED shorter than SNT in O. bacboensis (ED 6.6 mm, SNT 8.8 mm in FMNH 255611 (Bain et al. 2003); ED 5.2 mm, SNT 5.8 mm in SYS a001048); disks on fingers of males moderately enlarged FPW 0.83���1.57 mm, FPW:DPW ratio 1.16���1.52 vs. disks on fingers significantly enlarged (FPW 1.8 mm in FMNH 255611 (Bain et al. 2003); FPW:DPW ratio 1.87 in SYS a001048) in O. bacboensis; ventral spines present in adult mature males vs. absent in O. bacboensis. It differs from O. tiannanensis by its disks of fingers moderate enlarged, (FPW 0.83���1.57 mm, median 1.20 mm) in males vs. significantly enlarged (FPW 2.0 mm), mature oocytes purely black in life vs. yellow in O. tiannanensis. The absence of dorsolateral folds differentiates O. fengkaiensis sp. nov. from the following 24 congeners: O. absita, O. amamiensis, O. banaorum, O. bolavensis, O. exiliversabilis, O. gigatympana, O. graminea, O. hosii, O. indeprensa, O. khalam, O. leporipes, O. livida, O. monjerai, O. narina, O. nasica, O. nasuta, O. orba, O. supranarina, O. tormota, O. trankieni, O. utsunomiyaorum, O. versabilis, O. yentuensis and O. zhaoi. O. fengkaiensis sp. nov. can be distinguished from the remaining 29 recognized congeners by the combination of the following characters: dorsum brown with irregularly reticulated green markings in males and young females, becoming uniformly brown in old adult females vs. dorsal ground color always green in O. chloronota, O. sinica, O. aureola, O. anlungensis, O. grahami, O. kuangwuensis, O. margaretae, O. ishikawae, O. splendida, O. huanggangensis, O. hejiangensis, O. nanjiangensis, O. schmackeri, O. tianmuii, O. lipuensis, O. lungshengensis, O. wuchuanensis and O. yizhangensis; body small-sized in mature males, SVL 37.4���51.8 mm vs. considerably larger in O. cangyuanensis (62���69 mm), O. chapaensis (73���83 mm), O. geminate (71���79 mm), O. grahami (70���84 mm), O. jingdongensis (62���82 mm), O. mawphlangensis (80 mm), O. andersonii (68���76 mm), O. junlianensis (73���80 mm), O. kuangwuensis (57 mm), O. lungshengensis (60���67 mm), O. margaretae (78���88 mm), O. wuchuanensis (62���77 mm); having white pectoral spinules in mature males vs. absent in O. anlungensis, O. geminate, O. chapaensis, O. hejiangensis, O. kuangwuensis, O. lungshengensis, O. nanjiangensis, O. chloronota, O. sinica, O. aureola; present paired gular pouches in males vs. absent in O. lipuensis, O. margaretae and O. wuchuanensis; the absence of spinules along the dorsum of body and hindlimbs, flanks of trunk, temporal region and upper lip in mature males vs. the presence of spinules along lateral surface of head, extending to posterior dorsum of body in O. andersonii, on dorsal surface of hindlimbs in O. anlungensis, from jaw angle to level of loreal region in O. chapaensis; on upper lip from snout tip to level of mid-portion of eye in O. geminata, on lateral parts of body, temporal region, and anterior and posterior edge of tympanum in O. lipuensis, on eyelid and around tympanum in O. hejiangensis, on posterior dorsum of body and dorsal surface of hindlimbs in O. lungshengensis, on dorsum in O. mawphlangensis; tibio-tarsal articulation forward beyond the tip of snout vs. reaches the nostril in O. anlungensis, O. grahami, O. huanggangensis, O. wuchuanensis and O. kuangwuensis, reaches between eye and nostril in O. schmackeri, O. tianmuii, O. macrotympana, reaches tip of snout or between nostril and tip of snout in O. margaretae, O. swinhoana, O. nanjiangensis, O. margaretae, O. lungshengensis; outer metatarsal tubercle absent vs. present in O. swinhoana, O. rotodora. The new species possesses purely black mature oocytes in life, differentiating it from O. aureola, O. ishikawae, O. anlungensis, O. hejiangensis, O. jingdongensis, O. kuangwuensis, O. lipuensis, O. lungshengensis, O. margaretae, O. swinhoana, O. nanjiangensis, O. wuchuanensis, O. yizhangensis (all with purely whitish yellow to yellow oocytes), O. macrotympana (grey oocytes), O. andersonii, O. grahami, O. huanggangensis, O. junlianensis, O. schmackeri, O. tianmuii (their mature oocytes with dark colored animal pole and light colored vegetative pole in life). Further, the new species differs from O. rotodora by its snout obtusely rounded vs. obtusely pointed; upper lips brownish yellow with vertical black bars vs. light colored without bars in the latter. Distribution and habitats. Odorrana fengkaiensis sp. nov. is a lowland dweller. At present, it was only found in three localities: Heishiding Nature Reserve (23 �� 25 '��� 23 �� 30 ' N, 111 �� 48 '��� 111 �� 55 ' E), located in the northern region of the Yunkai Mountains, Fengkai County, Guangdong Province; Shiwandashan Nature Reserve (21 �� 40 '��� 22 ��04' N, 107 �� 29 '��� 108 �� 13 ' E) and Tongling Canyon (23 ��0' 11.07 "N, 106 �� 40 ' 2.22 "E), located in the China-Vietnam border area, namely in Shangsi and Jingxi Counties, Guangxi Zhuang Autonomous Region, China. The population from Heishiding Nature Reserve inhabits broad slow-flowing mountainous streams, rivers, pools and near the riparian areas, surrounded by moist subtropical evergreen broadleaved forests at elevations between 190���510 m a.s.l. (Fig. 6); the populations from Shiwandashan Nature Reserve and Tongling Canyon inhabit around broad streams, surrounded by moist subtropical evergreen broadleaved forests or secondary limestone forests at elevations between 290���550 m a.s.l.. Remarks. O. fengkaiensis sp. nov. was found on forest floor, rocks or low shrubs at night, and diving into water by disturbance. They take the shelter under submerged rocks or perhaps as entering holes in the banks during the day. All females were found on roadside and bare forest floor; all males were found on top of the bushes and scrubby branches at height of 10���30 cm, closed to adult females. The adult male individuals frequently emit a short whistling call from end of May to mid-July, and rarely emit voices for the rest of the year. The diet and behavior of O. fengkaiensis sp. nov. remains poorly known. We dissected SYS a000174 and found seven termites in its stomach. Currently, the tadpoles and eggs of O. fengkaiensis have not been found in the field, showed that the reproduction behavior of this species is rather cryptic. The female individuals were commonly found in May to September, occasionally in March, April, October and November. The male juvenile was found occasionally in September. The female paratypes, including SYS a000111, SYS a00184, SYS a002161, SYS a002262 possessed mature black oocytes in oviduct. While the females, collected before May and after August, possessed under-developed oocytes in ovary. Therefore, the breeding season of this species may be during May to August. Etymology. The specific epithet ��� fengkaiensis ��� refers to the locality of the holotype, Fengkai County, Guangdong Province, China. We propose the common English name ���Feng-kai Odor Frog��� for this species., Published as part of Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong & Liu, Yang, 2015, A new species of the genus Odorrana (Amphibia: Ranidae) and the first record of Odorrana bacboensis from China, pp. 235-254 in Zootaxa 3999 (2) on pages 241-247, DOI: 10.11646/zootaxa.3999.2.4, http://zenodo.org/record/237540, {"references":["Ao, J. M., Bordoloi, S. & Ohler, A. (2003) Amphibian fauna of Nagaland with nineteen new records from the state including five records for India. Zoos' Print Journal, 18 (6), 1117 - 1125.","Bain, R. H., Lathrop, A., Murphy, R. W., Orlov, N. L. & Cuc, H. T. (2003) Cryptic species of a cascade frog from Southeast Asia: Taxonomic revisions and descriptions of six new species. American Museum Novitates, 3417, 1 - 60.","Bain, R. H., Stuart, B. L., Nguyen, T. Q., Che, J. & Rao, D. Q. (2009) A new Odorrana (Amphibia: Ranidae) from Vietnam and China. Copeia, 2009 (2), 348 - 362. http: // dx. doi. org / 10.1643 / CH- 07 - 195","Stuart, B. L., Chuaynkern, Y., Chan-ard, T. & Inger, R. F. (2006) Three species of frogs and a new tadpole from eastern Thailand. Fieldiana: Zoology New Series, 111, 1 - 19. http: // dx. doi. org / 10.5962 / bhl. title. 3376","Fei, L., Ye, C. - Y. & Li, C. (2001) Descriptions Of Two New Species Of The Genus Odorrana In China (Anura: Ranidae). Acta Zootaxonomica Sinica, 26 (1), 108 - 114.","Li, P. - P., Lu, Y. - Y. & Rao, D. - Q. (2008) A new species of Cascade Frog (Amphibia, Ranidae) from Tibet, China. Acta Zootaxonomica Sinica, 33 (3), 537 - 541.","Matsui, M. & Jaafar, I. (2006) A new cascade frog of the subgenus Odorrana from Peninsular Malaysia. Zoological Science, 23 (7), 647 - 651. http: // dx. doi. org / 10.2108 / zsj. 23.647","Mo, Y. - M., Chen, W. - C, Wu, H. - Y., Zhang, W. & Zhou, S. - C. (2015) A new species of Odorrana inhabiting complete darkness in a karst cave in Guangxi, China. Asian Herpetological Research, 6 (1), 11 - 17 http: // dx. doi. org / 10.16373 / j. cnki. ahr. 140054"]}
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- 2015
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187. A new species of the genus Odorrana (Amphibia: Ranidae) and the first record of Odorrana bacboensis from China
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Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong, and Liu, Yang
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Amphibia ,Ranidae ,Animalia ,Biodiversity ,Anura ,Chordata ,Taxonomy - Abstract
Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong, Liu, Yang (2015): A new species of the genus Odorrana (Amphibia: Ranidae) and the first record of Odorrana bacboensis from China. Zootaxa 3999 (2): 235-254, DOI: http://dx.doi.org/10.11646/zootaxa.3999.2.4
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- 2015
188. Odorrana bacboensis
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Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong, and Liu, Yang
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Amphibia ,Odorrana ,Ranidae ,Animalia ,Biodiversity ,Anura ,Chordata ,Odorrana bacboensis ,Taxonomy - Abstract
Odorrana bacboensis (Bain, Lathrop, Murphy, Orlov, & Ho, 2003), a new record for China Fig. 5: A Specimens examined. Two adult female specimens SYS a001046 and SYS a001047, an adult male specimen SYS a001048 from Bainan village (23 �� 3 ' 15.56 " N, 105 �� 48 ' 57.85 " E; 330 m a.s.l.), Napo County, Guangxi Zhuang Autonomous Region, China, collected by JHY and RLL on 6 th august 2010. Description of specimens from China. The head length greater than width, HDL: HDW 1.08���1.14 in females, 1.21 in male; head width 0.30���0.35 times of SVL in females, 0.33 times of SVL in male; head length 0.34���0.37 times of SVL in females, 0.40 times of SVL in male; snout short, rounded in dorsal view, bluntly rounded in profile, projecting beyond margin of lower jaw; eye large, eye diameter 0.72���0.90 times of SNT, upper eyelid wider than interorbital distance; top of head flat; canthus rostralis rounded; lip flared; loreal region concave; internasal distance larger than interorbital distance; tympanum circular, large, distinctly visible, tympanum diameter 0.47���0.52 times of eye diameter in females, 0.62 times in male; tympanum-eye distance small (TED 2.9��� 3.4 mm in female, 0.8 mm in male); Choanae ovoid; vomerine dentigerous processes prominent, slightly oblique, posteromedial to choanae; tongue cordiform, distinctly notched posteriorly. Forelimbs moderately robust; hand length 0.28 times of SVL in females, 0.31 times in male; relative finger lengths II Variation. Measurement and body proportions of all specimens from Napo County, Guangxi are listed in Table 3. The Chinese specimens basically match with the original description of Bain et al. (2003), but also show morphological difference, especially in color pattern. Specifically, the dorsum of head and body decorated with reticulated green markings in Chinese specimens (lacking same green markings in original description of Bain et al. (2003)). In addition, head length 1.21 times of head width, 0.40 times of SVL in male SYS a001048. In contrast, Bain et al. (2003) reported that the head of male paratype FMNH 255611 extraordinary long, head length 1.55 times of head width, 0.51 times of SVL (SVL 54.9 mm, HDL 28.0 mm, HDW 18.1 mm).Therefore, the measurement data from the original description might be inaccurate. Revised diagnosis. (1) SVL 35.6���54.9 mm in adult males, 78���105 mm in adult females; (2) vomerine teeth present in rows oblique to choanae; (3) vertical black stripes on lip, especially distinct under eye; (4) tympanum circular, distinct, TYD:ED 0.47���0.52 in females, 0.62���0.66 in the male; (5) supratympanic fold weak; (6) dorsal skin shagreened, becoming tubercles and pustules laterally; (7) dorsolateral fold absent; (8) venter smooth, no pectoral spinules; (9) dorsum brown with black blotches, sometimes dorsum of head and body decorated with reticulated green markings; (10) disks on fingers and toes enlarged; (11) feet fully webbed to disks, but as a fringe from distal subarticular tubercle of IV, slight lateral fringes on toes I and V to terminal phalanges; (12) subarticular tubercles distinct, conical; (13) male with nuptial pad on finger I; (14) paired gular pouches; (15) oocytes black. Distribution. The Chinese specimens collected from Bainan River, located in the China-Vietnam border at night, represent the first record of O. bacboensis for China. Furthermore, our molecular phylogenetic analyses revealed that voucher HNNU HK 001, which was misidentified as O. tiannanensis in Chen et al. 2013, from Hekou County, Yunnan, China, also is classified to O. bacboensis. The Hekou County bordering on Vietnam, at a distance of 200 km away from Bainan Village, Napo County, Guangxi (Fig. 1). Therefore, area of occurrence of O. bacboensis may be significantly expanded., Published as part of Wang, Ying-Yong, Lau, Michael Wai-Neng, Yang, Jian-Huan, Chen, Guo-Ling, Liu, Zu-Yao, Pang, Hong & Liu, Yang, 2015, A new species of the genus Odorrana (Amphibia: Ranidae) and the first record of Odorrana bacboensis from China, pp. 235-254 in Zootaxa 3999 (2) on pages 247-249, DOI: 10.11646/zootaxa.3999.2.4, http://zenodo.org/record/237540, {"references":["Bain, R. H., Lathrop, A., Murphy, R. W., Orlov, N. L. & Cuc, H. T. (2003) Cryptic species of a cascade frog from Southeast Asia: Taxonomic revisions and descriptions of six new species. American Museum Novitates, 3417, 1 - 60.","Chen, X. - H., Chen, Z., Jiang, J. - P., Qiao, L., Lu, Y. - Q., Zhou, K. - Y., Zheng, G. - M., Zhai, X. - F. & Liu, J. - X. (2013) Molecular phylogeny and diversification of the genus Odorrana (Amphibia, Anura, Ranidae) inferred from two mitochondrial genes. Molecular Phylogenetics and Evolution, 69 (3), 1196 - 1202. http: // dx. doi. org / 10.1016 / j. ympev. 2013.07.023"]}
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- 2015
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189. Classification of Harish-Chandra Modules for Current Algebras
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Lau, Michael, primary
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- 2017
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190. Unobtrusive acquisition and extraction of fetal and maternal ECG in the home setting
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Sharma, Manuja, primary, Ritchie, Peter, additional, Ghirmai, Tadesse, additional, Cao, Hung, additional, and Lau, Michael P. H., additional
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- 2017
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191. Racial Discrimination and Health Outcomes Among Racial/Ethnic Minorities: A Meta-Analytic Review
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Carter, Robert T., primary, Lau, Michael Y., additional, Johnson, Veronica, additional, and Kirkinis, Katherine, additional
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- 2017
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192. Position Control of Asymmetric Nonlinearities for a Cable-Conduit Mechanism
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Do, Thanh Nho, primary, Tjahjowidodo, Tegoeh, additional, Lau, Michael Wai Shing, additional, and Phee, Soo Jay, additional
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- 2017
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193. A review of co-milling techniques for the production of high dose dry powder inhaler formulation
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Lau, Michael, primary, Young, Paul M., additional, and Traini, Daniela, additional
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- 2017
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194. Co-milled API-lactose systems for inhalation therapy: impact of magnesium stearate on physico-chemical stability and aerosolization performance
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Lau, Michael, primary, Young, Paul M., additional, and Traini, Daniela, additional
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- 2017
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195. In-office rapid volumetric ablation of uterine fibroids under ultrasound imaging guidance: Preclinical and early clinical experience with the Mirabilis transabdominal HIFU treatment system
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Leal, José G. Garza, primary, León, Ivan Hernandez, additional, Sáenz, Lorena Castillo, additional, Aguirre, Juan M. Aguilar, additional, Lagos, Joel J. Islas, additional, Parsons, Jessica E., additional, Darlington, Gregory P., additional, and Lau, Michael P. H., additional
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- 2017
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196. Extensions of modules for twisted current algebras.
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Auger, Jean and Lau, Michael
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CURRENT algebra , *MODULES (Algebra) , *FUNDAMENTAL groups (Mathematics) , *ROOT systems (Algebra) , *FINITE groups - Abstract
Abstract Twisted current algebras are fixed point subalgebras of current algebras under a finite group action. Special cases include equivariant map algebras and twisted forms of current algebras. Their finite-dimensional simple modules fall into two categories, those which factor through an evaluation map and those which do not. We show that there are no nontrivial extensions between finite-dimensional simple evaluation and non-evaluation modules. We then compute extensions between any pair of finite-dimensional simple modules for twisted current algebras, and use this information to study the block decomposition for the category. In the special case of twisted forms, this decomposition can be described in terms of maps to the fundamental group of the underlying root system. [ABSTRACT FROM AUTHOR]
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- 2019
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197. A TCR Mimic CAR T Cell Specific for NDC80 Is Broadly Reactive With Solid Tumors and Hematological Malignancies
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Klatt, Martin G., Dao, Tao, Yang, Zhiyuan, Liu, Jianying, Mun, Sung Soo, Dacek, Megan M., Luo, Hanzhi, Gardner, Thomas J., Bourne, Christopher, Peraro, Leila, Aretz, Zita E.H., Korontsvit, Tanya, Lau, Michael, Kharas, Michael G., Liu, Cheng, and Scheinberg, David A.
- Abstract
Target identification for CAR T cell therapies remains challenging due to the limited repertoire of tumor-specific surface proteins. Intracellular proteins presented in the context of cell surface HLA provide a wide pool of potential antigens targetable through TCR mimic antibodies. Mass spectrometry (MS) of HLA ligands from eight hematological and non-hematological cancer cell lines identified a shared, non-immunogenic, HLA-A*02 restricted ligand (ALNEQIARL) derived from the kinetochore-associated NDC80gene. CAR T cells directed against the ALNEQIARL:HLA-A*02 complex demonstrated high sensitivity and specificity for recognition and killing of multiple cancer types, especially those of hematological origin and were efficacious in mouse models against a human leukemia and a solid tumor. In contrast, no toxicities towards resting or activated healthy leukocytes as well as hematopoietic stem cells were observed. This demonstrates how MS can inform the design of broadly reactive therapeutic TCR mimic CAR T cell therapies that can target multiple cancer types currently not druggable by small molecules, conventional CAR T cells, T cells or antibodies.
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- 2024
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198. Stability Study of Molecularly Doped Semiconducting Polymers
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Jha, Meghna, Mogollon Santiana, Joaquin, Jacob, Aliyah A., Light, Kathleen, Hong, Megan L., Lau, Michael R., Filardi, Leah R., Miao, Haoqian, Gurses, Sadi M., Kronawitter, Coleman X., Mascal, Mark, and Moulé, Adam J.
- Abstract
Molecular doping of semiconducting polymers has emerged as a prominent research topic in the field of organic electronics, with new dopant molecules introduced regularly. FeCl3has gained attention as a p-type dopant due to its low cost, availability, ability to dope high ionization energy copolymers, and its use as a dopant that can be used with anion exchange. Here, we use a combination of UV–vis–NIR spectroscopy, four-probe sheet resistance measurements, and X-ray absorption near-edge structure (XANES) spectroscopy to perform lifetime measurements to assess the stability of the doped polymers over time, which is crucial for evaluating the long-term performance and reliability of the doped films. We used gas chromatography–mass spectrometry (GCMS) to prove that FeCl3can cause radical side reactions that damage the conjugated polymer backbone, leading to the degradation of the electronic properties. The rate of this degradation is orders of magnitude higher when the film is exposed to air. Anion exchange doping can reduce the [FeCl4]−concentration, but does not necessarily improve the doping lifetime because anion exchange electrolytes can serve as coreactants for the degradation reaction. By comparison, doping with (2,3,5,6-tetrafluoro-2,5-cyclohexadiene-1,4-diylidene)dimalononitrile (F4TCNQ) as the reactive dopant results in lower initial conductivity, but the lifetime of the doped polymer is almost tripled as compared to that of FeCl3doped polymer films. These findings highlight that the use of FeCl3as a molecular dopant requires a cost-benefit analysis between higher initial doping levels and lower film stability.
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- 2024
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199. Modelling, design, and control of a robotic running foot for footwear testing with flexible actuator
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Do, Thanh Nho, Nguyen, Thanh Luan, Lau, Michael Wai Shing, Phee, Soo Jay, School of Mechanical and Aerospace Engineering, The 1st International Conference in Sports Science & Technology (ICSST), and Robotics Research Centre
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Science::Physics::Weights and measures [DRNTU] - Abstract
Footwear effects on the human feet have been widely studied to prevent injuries, improve sports performance, and human health through running exercise. Due to the dynamics of human joints and passive imitative feet, current automatic footwear testing systems reported in the literature are not very realistic, are limited in the imitation of running gaits, and still use the passive prosthetic foot. In addition, many studies on humanoid walking robots, orthotic ankles, and prosthetic foot for amputees only focus on the human ankle joint and walking gaits. In this project, the design and control of a realistic robotic running foot-leg testing of shoes are introduced. The designed robotic foot possesses a higher number of degrees of freedom compared to other robotic systems in the literature and have abilities to mimic accurately biomechanical patterns of the human foot as well as to replicate the plantar pressure distribution under the foot sole in running in the sagittal plane. Because of lightweight, flexibility, and ease of power transmission, the Bowden-cable or the tendon- sheath mechanism (TSM) is used in this project for the actuation of the robotic joints. However, nonlinear friction and backlash hysteresis in such mechanisms vary with the change of cable configuration and they degrade the system performances. In this project, novel nonlinear and adaptive schemes for controlling the position of the ankle and metatarsophalangeal joints will also be presented. The control schemes consider the nonlinear and backlash hysteresis as uncertainties and are able to deal with unexpected disturbances due to the change of the cable configuration and the unknown environments. In addition, no knowledge of the model parameters is required. To validate the design systems and control approaches, simulations are also introduced. There are good agreements between the proposed approaches and simulation results. Published version
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- 2014
200. Hard disk secrets
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Lau, Michael
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10GB - 14.99GB hard disk drive ,Hard disk drive ,Under 5GB hard disk drive ,15GB - 19.99GB hard disk drive ,Over 25GB hard disk drive ,Performance improvement ,5GB - 9.99GB hard disk drive ,Cache memory ,20GB - 25GB hard disk drive ,Hard disks ,Cache memory ,Disk caching - Abstract
Hard Disk Secrets Still waiting for your database to complete a sort or finish generating that report? You should know that with an average database application, the hard disk speed […]
- Published
- 1990
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